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/*
* IEEE802.15.4-2003 specification
*
* Copyright (C) 2007-2012 Siemens AG
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef
NET_MAC802154_H
#define
NET_MAC802154_H
#include
<net/af_ieee802154.h>
/* General MAC frame format:
* 2 bytes: Frame Control
* 1 byte: Sequence Number
* 20 bytes: Addressing fields
* 14 bytes: Auxiliary Security Header
*/
#define
MAC802154_FRAME_HARD_HEADER_LEN
(2 + 1 + 20 + 14)
/* The following flags are used to indicate changed address settings from
* the stack to the hardware.
*/
/* indicates that the Short Address changed */
#define
IEEE802515_AFILT_SADDR_CHANGED
0x00000001
/* indicates that the IEEE Address changed */
#define
IEEE802515_AFILT_IEEEADDR_CHANGED
0x00000002
/* indicates that the PAN ID changed */
#define
IEEE802515_AFILT_PANID_CHANGED
0x00000004
/* indicates that PAN Coordinator status changed */
#define
IEEE802515_AFILT_PANC_CHANGED
0x00000008
struct
ieee802154_hw_addr_filt
{
__le16
pan_id
;
/* Each independent PAN selects a unique
* identifier. This PAN id allows communication
* between devices within a network using short
* addresses and enables transmissions between
* devices across independent networks.
*/
__le16
short_addr
;
u8
ieee_addr
[
IEEE802154_ADDR_LEN
];
u8
pan_coord
;
};
struct
ieee802154_dev
{
/* filled by the driver */
int
extra_tx_headroom
;
u32
flags
;
struct
device
*
parent
;
/* filled by mac802154 core */
struct
ieee802154_hw_addr_filt
hw_filt
;
void
*
priv
;
struct
wpan_phy
*
phy
;
};
/* Checksum is in hardware and is omitted from a packet
*
* These following flags are used to indicate hardware capabilities to
* the stack. Generally, flags here should have their meaning
* done in a way that the simplest hardware doesn't need setting
* any particular flags. There are some exceptions to this rule,
* however, so you are advised to review these flags carefully.
*/
/* Indicates that receiver omits FCS and xmitter will add FCS on it's own. */
#define
IEEE802154_HW_OMIT_CKSUM
0x00000001
/* Indicates that receiver will autorespond with ACK frames. */
#define
IEEE802154_HW_AACK
0x00000002
/* struct ieee802154_ops - callbacks from mac802154 to the driver
*
* This structure contains various callbacks that the driver may
* handle or, in some cases, must handle, for example to transmit
* a frame.
*
* start: Handler that 802.15.4 module calls for device initialization.
* This function is called before the first interface is attached.
*
* stop: Handler that 802.15.4 module calls for device cleanup.
* This function is called after the last interface is removed.
*
* xmit: Handler that 802.15.4 module calls for each transmitted frame.
* skb cntains the buffer starting from the IEEE 802.15.4 header.
* The low-level driver should send the frame based on available
* configuration.
* This function should return zero or negative errno. Called with
* pib_lock held.
*
* ed: Handler that 802.15.4 module calls for Energy Detection.
* This function should place the value for detected energy
* (usually device-dependant) in the level pointer and return
* either zero or negative errno. Called with pib_lock held.
*
* set_channel:
* Set radio for listening on specific channel.
* Set the device for listening on specified channel.
* Returns either zero, or negative errno. Called with pib_lock held.
*
* set_hw_addr_filt:
* Set radio for listening on specific address.
* Set the device for listening on specified address.
* Returns either zero, or negative errno.
*/
struct
ieee802154_ops
{
struct
module
*
owner
;
int
(
*
start
)(
struct
ieee802154_dev
*
dev
);
void
(
*
stop
)(
struct
ieee802154_dev
*
dev
);
int
(
*
xmit
)(
struct
ieee802154_dev
*
dev
,
struct
sk_buff
*
skb
);
int
(
*
ed
)(
struct
ieee802154_dev
*
dev
,
u8
*
level
);
int
(
*
set_channel
)(
struct
ieee802154_dev
*
dev
,
int
page
,
int
channel
);
int
(
*
set_hw_addr_filt
)(
struct
ieee802154_dev
*
dev
,
struct
ieee802154_hw_addr_filt
*
filt
,
unsigned long
changed
);
int
(
*
ieee_addr
)(
struct
ieee802154_dev
*
dev
,
u8
addr
[
IEEE802154_ADDR_LEN
]);
};
/* Basic interface to register ieee802154 device */
struct
ieee802154_dev
*
ieee802154_alloc_device
(
size_t
priv_data_lex
,
struct
ieee802154_ops
*
ops
);
void
ieee802154_free_device
(
struct
ieee802154_dev
*
dev
);
int
ieee802154_register_device
(
struct
ieee802154_dev
*
dev
);
void
ieee802154_unregister_device
(
struct
ieee802154_dev
*
dev
);
void
ieee802154_rx_irqsafe
(
struct
ieee802154_dev
*
dev
,
struct
sk_buff
*
skb
,
u8
lqi
);
#endif
/* NET_MAC802154_H */
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